chemical product; chemicals

Process in which substances change their composition or structure to form new substances

The industrial sector that uses chemical reactions to manufacture products such as fuels, plastics, and medicine; often abbreviated as [[化工|化工|hua4 gong1]]

specialist in chemistry

the branch of science that uses chemical principles and methods to study living systems and their chemical processes

Weapons that use the toxic properties of chemical substances to cause harm, death, or disablement to people and the environment; often includes agents like poison gas, nerve agents, or incendiaries.

the branch of chemistry that deals with the relationship between electricity and chemical change

the branch of chemistry concerned with the application of the techniques and theories of physics to the study of chemical systems

The branch of chemistry that studies carbon compounds and organic substances.

chemical property; the nature or characteristics of a chemical substance

Fertilizer produced through chemical reactions or mechanical processing from minerals, air, and water, as opposed to natural fertilizers; commonly shortened to [[化肥|化肥|hua4 fei2]]

Chemical or man-made fiber; fiber produced by chemical processing of natural or synthetic polymers. Includes both regenerated and synthetic fibers. Shortened to [[化纤|化纖|hua4 xian1]].

The branch of chemistry that studies the separation, identification, and quantification of the chemical components of natural and artificial materials.

chemical element; any of the basic substances that cannot be broken down into simpler substances by ordinary chemical methods

A formula using chemical symbols and numbers to represent the composition of a substance; includes molecular, structural, and empirical formulas.

the department of chemistry within a college or university

the branch of chemistry concerned with the chemical effects of light; also known as actinology

the branch of chemistry that deals with the products and techniques of refining petroleum and natural gas

The branch of chemistry that studies elements and compounds that do not contain carbon-hydrogen bonds

The strong force of attraction that holds atoms together in a molecule or crystal

energy stored in the chemical composition of a substance that is released during a chemical reaction

The use of chemical weapons to kill or incapacitate people and livestock or destroy crops and forests; also called [[毒气战|毒氣戰|du2 qi4 zhan4]].

a harmful type of smog formed when pollutants like vehicle exhaust or industrial gases react with ultraviolet light from the sun

scientist specializing in biochemistry

chemical plant; chemical factory

the study of the chemical synthesis and properties of polymers

The science of applying chemical knowledge to agriculture, including the study of soil, fertilizers, pesticides, and biochemistry.

The study of the relationship between chemical reactions and heat energy.

A concise way to represent a chemical change, usually with reactants on the left and products on the right connected by an arrow or equals sign; same as [[化学方程式|化學方程式|hua4 xue2 fang1 cheng2 shi4]]

The study of the chemical properties and structures of radioactive materials and nuclear reactions.

chemical equivalent; the ratio of the atomic weight of an element to its valence, used to determine the weight proportions of substances when they combine

Deutsches Institut für Normung e.V. (DIN), the German national organization for standardization

the branch of chemistry concerned with the properties and behavior of colloidal systems

pharmaceutical chemistry; pharmacochemistry

chemical reaction initiated by the absorption of energy in the form of light

A process in which substances interact to change their structure, properties, or composition into different substances

any chemical substance used by an organism to send messages or trigger a response in another individual

A method of using chemical principles and reactions to determine the composition or constituents of a substance. Commonly categorized into [[定性分析|定性分析|ding4 xing4 fen1 xi1]] and [[定量分析|定量分析|ding4 liang4 fen1 xi1]].

an instrument used to measure exposure to ionizing radiation through chemical changes

A process where substances are transformed into different substances by chemical action; chemical transformation.

The branch of engineering that deals with chemical production and the manufacture of products through chemical processes; often abbreviated as [[化工|化工|hua4 gong1]].

the discipline and techniques of chemical production and processing

chemist; apothecary

The characteristics of a substance that are observed during a chemical reaction, such as its acidity, alkalinity, or stability.

the chemical composition or makeup of a substance; chemical ingredients

The use of toxic chemical substances as weapons to kill or injure people and livestock, destroy vegetation, or contaminate the environment; commonly known as [[毒气战|毒氣戰|du2 qi4 zhan4]]

A chemical substance in solid, liquid, or gas form used on a battlefield to produce toxic, obscuring, incendiary, or signaling effects.